When your washing machine does not work, it’sa good idea to verify the ability of your washing machine motor before you decide to replace the motor. This can be done in several phases.
What you need
flathead screwdriver
Needle nose pliers
Jumper wires with alligator clips on both ends
Multimeter
Step 1 – Prepare
Remember to unplug your washer. Your equipment is supplied with insulated handles to avoid electric shock.
When you are ready to begin, remove the back panel so you can reach the washer motor. Find the start capacitor, which is the larger of the two capacitors, and remove the metal lid. Before changing anything, make sure to paint a picture of how the son of engine are connected across the capacitor so that you will be able to replace them when done correctly.
Step 2 – Removal of cables
Now you can remove the son of the terminals. Use your needle nose pliers for this.
Step 3 – Run Discharge capacitor
Discharge of run capacitor by placing an alligator clip jumper on your capacitor box, and place the other on the metal stem of your screwdriver. Next, place the blade of a screwdriver to the terminals and the shaft of the screwdriver to the other terminal. This will cause the capacitor to a short circuit, which means that you can negotiate with him without worrying shocked because he has an office store and can cause a shock, even when unplugged.
Step 4 – Configure the multimeter
Change your multimeter so that it is defined at the scale of OHM. When done, press the two-point lead to another and move the dial until the needle reaches zero and then up.
Step 5 – Checking the capacitor
Touch the terminals of the capacitor. The black wire goes right, the red wire goes on the left. This should make the needle on the meter jump from zero to the right before returning to zero. Then you have to reverse the son. This will move the needle even further from zero, before returning. If needle does not move, it means that your capacitor is not working.
Washing Machine Motor
August 22nd, 2010 in
Washing Machine Motor | tags:
Washing Machine Motor |
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Time for a new electrical motor? Make your purchase based on efficiency and from brands you can trust.
Looking for a powerful but simple motor that will endure through time and high stress? Buy a DC motor for efficient results.
The need for the highest level of efficiency, reliability and durability in a motor should not be ignored. Don’t be fooled…the quality of your motor makes a huge impact on the performance of your equipment. You want a motor that will ensure a constant flow of energy so your motor will function without setbacks and without fail. And with hard-wearing industrial vehicle or equipment, especially, you need a motor you can trust.
For heavy-duty industrial vehicles
This need becomes more important when dealing with high load, high usage and heavy-duty vehicles or equipment such as transport trucks, city buses, fire engines, or commercial refrigeration. Be prepared with a 12v DC motor, for instance, and reduce the possibility or frequency of expensive repairs.
Ready to buy a quality DC motor…as soon as you know which one to buy
Motor’s come in a number of different categories depending on purposes. A 12v DC motor, for instance, is part of a lift gate, a hydraulic pump,a salter, a snow plow, or a winch.
And how do I find and buy a reliable DC motor? How do I know which brands I can trust?
Finding a reliable motor is more likely to occur if you go through a reliable distributor. Signs of a reliable distributor are:
If they have many years of experience
If they are representing top-quality brands
If they demonstrate transparency through providing thorough customer service such as an on-line catalog or a toll free customer service number, for instance
If they provide a warranty or guarantee with their product
August 11th, 2010 in
DC Motor | tags:
DC Motor |
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The motor of your ceiling fan is one of the most important components. You must always keep this point in mind. The blades form the second most important competent because the motor is the part that makes the blade move.
Of course, if the motor is not working properly, the blades will be of no use and if the latter is malfunctioning, a well functioning motor will be of no use. However, other factors like the appearance and looks of the ceiling fan will be irrelevant as long as the motor or the blades are not working properly.
What factors should you keep in mind when you are taking care of the motor? The function of the device is very simple. When powered on, it is expected to rotate and keep rotating until it is switched off. It does not have any other function. Yet, there are many factors that affect performance.
If you have replaced your ceiling fan in an area where there are numerous draughts of wind, it is obviously going to cause the fan to wobble. It is also going to affect the speed of rotation of the blades. If there is a lot of resistance due to high wind, you may find that your motor requires a lot more maintenance.
Further, the motor is normally placed just on top of the fan itself. This ensures that there is very little scope for loss of power in transmission. If you have installed your motor elsewhere, it is obviously going to affect performance.
Thirdly, dust and dirt will have a negative impact on the performance of the motor of your ceiling fan. This is an important point that requires frequent attention. Of course, the fan head is closed and dust and dirt cannot enter easily. However, if you have the fan that is covered in a layer of dust, it is obvious that performance is going to get hit.
If you are replacing the motor of your fan, you should make sure that the fan rotates smoothly before you fit the blades. If there is any impedance in the movement, there is no point in increasing the weight of the device and creating more trouble.
Further, removing the blades will make it easier to check the ceiling fan. Nine out of ten persons would not be required to touch the motor of the ceiling fan. This is something that is best left to professionals.
However, this is not a very complicated job. It just happens to be a slightly different job and people rely on professionals because the effort is not just worth the consequent benefit.
August 9th, 2010 in
Fan Motor | tags:
Fan Motor |
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Since you have resolved to build electric vehicle of your own, Just like in life, before one set out to do something, a proper knowledge is highly needed. Now you need to learn about electric motors. The following are considerations in choosing which vehicle to install.
1. How big of a motor do you need?
2. Do you use D.C or A.C motor?
3. Detailed plan to go about it.
4. Do you choose a car or truck?
Let’s get started by outlining what you should look out is the vehicle suitable for conversion to electric vehicle. A featherweight vehicle is most suitable for electric vehicle conversion; the vehicle should also have ample room for batteries. This featherweight vehicle chassis should be strong enough to contain the additional weight of the batteries and D.C electric vehicle motor. These are basically the main concern when thinking of owning of an electric motor.
Which motor to go for D.C or A.C?
Big companies are installing AC motors. A.C is light for its power output and they have a powerful charging device that works off of your braking system when the AC motor is slowed down that energy is actually transferred to the batteries. DC motor is preferred to AC motor, because A.C is difficult to install and is expensive. So many people like me embrace D.C for their electric motors.
The outlined plan showed us where to find free electric vehicle motors and deep cycle batteries, thus, reducing our cost for driving our dream vehicle.
Another great way of reducing cost is by going for used or recycled DC electric motor, since the motor will serve longer enough even for a life time of two vehicles. DC electric motor of 9 to 13 inch range works best and has lots of power.
Since our environment is changing due to burning of fossil fuel (gas), and with gas prices determined to hit $10 per gallon in the nearest future, the time to switch to electric vehicle is right now.
August 8th, 2010 in
AC motor,
DC Motor | tags:
AC motor,
DC Motor |
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The world of electric motors is quite fascinating. For many making and collecting various types of electric motors is a hobby and for others making them to power various devices is a profession. Whatever the approach is, but these devices offer innumerable possibilities for improvisation.
Working with them and understanding them is a rewarding and learning experience. Let us find out more about these in general. Usually, they can be classified into two main types. They are direct current or DC and alternating current or AC motors. DC or AC is very common terms and they refer to how the electrical current is transferred through and from the motor. Both types of motors have different utilities and uses.
DC motors are usually available in two general types. Alike, AC motors also come in two different types. They can be two phase or three phase AC motors. Although on technical front, the differences in DC and AC motors are sometimes marginal, but some of these differences make one types better than the other for a certain use.
In general, the DC electric motors work for conditions controlling the speed is essential. It is due to the factor that DC motors have a steady and constant current. DC motors are also the first and earliest motors used. But these good factors are also accompanied with some limitations; for instance, the DC electric motors are incapable of producing power over long period of time.
Most of the electric companies are aware of the limitation of the DC motor and have found that the power was lost as the electric current was transmitted. One of the variant, the Brush DC motors, uses certain rings that conduct the current and form the magnetic drive that runs the rotor. On the other hand, the brush-less DC electric motors bring forth a switch to generate the magnetic drive that powers the rotor. Direct current motors commonly used in most of the electric appliances in your home.
Now coming back to the AC motors we find that these kinds of motors are commonly used on the basis of their type. For instance, the single phase AC motors are used for general purpose. This type of motors will work efficiently in different conditions. AC motors are effective for systems that are hard to start because they need a lot of power for this purpose.
The three phase AC motors, also called polyphase, are commonly found in industrial sector. The AC motors have a high starting power built to transmit lower levels of overall power. As it alternated the power, so it gets its name AC. The amount of power specified by an AC motor is determined by the amount of power needed to operate the system.
Generally, the DC and AC motors are easily come across everywhere from the home to the car to industrial uses. The introduction of DC motors is still considered no less than a revolution and when AC motors were available in the market the way motors were looked at changed because of their amazing starting power potential. DC motors and AC motors are different in many ways, but they still both are used to power the world of electric appliances.
August 5th, 2010 in
Electrical Motor | tags:
Electric Motors |
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1: servo motor
Servo motors are widely used in various control system, can enter the motor shaft voltage signal is converted to mechanical output, drag the component to be controlled to achieve the control objective. DC and AC servo motors are divided, the first servo motor is a general DC motor, high precision in the control situation, only to do with the general DC motor servo motor. The current structure of terms from the DC servo motor is a low-power DC motor, the armature of its excitation control and multi-use field control, but usually controlled by the armature.
2: Stepper Motor
Stepper motors are used in CNC machine tool manufacturing, as stepper motors do not need A / D conversion, digital pulse signal directly transformed into angular displacement, it has always been considered the best implementation of components for CNC machine tools. In addition to the application of CNC machine tools, stepper motors can also be used in other machinery, such as the automatic feeder of the motor, as a universal floppy disk drive motor can also be used in the printer and plotter.
3: Torque Motor
Torque motor with low speed and high torque characteristics. Generally used in the textile industry often exchange torque motor, and its working principle and structure of the same single-phase asynchronous motor.
4: Switched Reluctance Motor
SRM is a new speed control motor, the structure is extremely simple and rugged, low cost, speed performance, strong traditional motor control competitor with strong market potential.
5: Brushless DC Motor
Brushless DC motor mechanical properties and regulation characteristics of linearity, wide speed range, long life, easy to maintain noise, there is no brush caused by a range of issues, so this motor control system in great application.
6: DC Motor
DC motor with speed performance, start easy, start to load, etc, so now the application of DC motor is still widespread, especially in the SCR after DC power supply.
7: Asynchronous Motor
Induction motor has a simple structure, manufacture, use and maintenance of convenience, reliability and quality of small, low cost advantages. Induction motor drive primarily used in machine tools, pumps, blowers, compressors, lifting hoist equipment, mining machinery, light machinery, agricultural products processing machinery, production machinery, and the majority of workers and peasants, household appliances and medical equipment. Application in household appliances are more, such as electric fans, refrigerators, air conditioning, vacuum cleaner.
8: Synchronous Motor
Synchronous motor mainly used for large-scale machinery, such as fans, pumps, ball mills, compressors, rolling mills and small, micro-instruments, or act as control components. Three phase synchronous motor which is its principal. In addition, you can adjust the camera when using the power grid or capacitive inductive reactive power.
August 2nd, 2010 in
Uncategorized | tags:
Motor |
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Pump performance parameters such as flow rate Q H lift shaft power N speed n efficiency η a certain relationship exists between. The magnitude of change in relations between them with a curve that this curve is called the pump performance curve.
Pump performance parameters of relationship between the change and restricted: first to the top of the pump speed is the amount of pre-conditions.
Pump performance curve are mainly three curves: the flow – lift curve, flow – the power curve, flow – efficiency curve.
A, flow – lift curve
It is the basic pump performance curve. Less than 80 specific speed centrifugal pumps with the rise and fall characteristics (both intermediate raised on both sides under the curve), said the performance curve hump. Than the speed of the pump between 80 to 150 with a flat performance curve. Specific speed centrifugal pumps in more than 150 performance curve has a steep drop. In general, when the traffic hours, head on high, lift with increasing flow was gradually decreased.
B, flow rate – the power curve
Shaft power is increased with the flow, when the flow rate Q = 0, the corresponding shaft power is not equal to zero, and for the certain value (about 60% of normal operation). The power consumption of the mechanical loss of the principal. Pump in the water at this time is full, if long run, will cause the pump to the temperature rising, pump casing, bearings may have a fever, severe heat may cause deformation of the pump, we called the “stuffy head”, at this time head for the maximum, when the valve is gradually opened, the flow will gradually increase, shaft power is slowly increased.
C, flow rate – the efficiency curve
It is the shape of the curve Elephant head, when the flow is zero, the efficiency is equal to zero, as the flow increases, the efficiency gradually increased, but increased the efficiency of the drop after a certain value, and efficiency has a maximum value, the maximum efficiency point, efficiency is relatively high, the region known as the high efficiency area.
August 1st, 2010 in
Uncategorized | tags:
Centrifugal pump |
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Magnetic materials mainly refers to the transition elements iron, cobalt, nickel and its alloys composed of magnetic material directly or indirectly from magnetic material.
Magnetic materials and structures from the material sense, is divided into “magnetic metals and alloys,” and “ferrite magnetic materials,” two categories, ferrite materials are divided into structure and crystal structure of polycrystalline materials.
From the applications perspective, magnetic material is divided into: soft magnetic materials, permanent magnet materials, magnetic recording – moment magnetic materials, magnetic materials, spin, etc. types. Soft magnetic materials, permanent magnet materials, magnetic recording – Magnetic Materials moment there are both metal ferrite materials; the rotating magnetic materials and high-frequency soft magnetic material is ferrite materials can only be, because the metal in high frequency and microwave frequency eddy will have a huge effect, resulting in metal magnetic materials can not be used, while the resistivity of ferrite is very high, will effectively overcome this problem, has been widely used.
Magnetic terms from the form. Including powder materials, liquid materials, bulk materials, thin film materials.
The application of magnetic materials are widely used electronic sound, telecommunications, electric meter, motor, also for memory components, microwave components and so on. Can be used for recording language, music, images, information, tapes, computer magnetic storage devices, passengers ride fare settlement vouchers and magnetic cards.
July 29th, 2010 in
Magnetics | tags:
Magnetics |
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The definition of fractional horsepower motors
Fractional horsepower motor is powered by 220V AC source for a class of motors, it applies to only a single-phase power supply (single-phase power) of the small-scale industrial equipment and household appliances.
Single-phase asynchronous motor works
In the AC motor, when the stator winding through the exchange of current, established the armature magnetomotive force, its electrical energy conversion and the running performance has a significant impact. Therefore, single-phase AC single-phase AC winding access generated pulsating magnetic momentum, the magnetic motive force can be decomposed into two equal amplitude, opposite speed MMF and to create a true story in the air gap and reverse magnetic field and. The two rotating magnetic field cutting the rotor conductors, and conductors were generated in the rotor induced voltage and induced current.
The current and the magnetic interaction of positive and negative electromagnetic torque. Positive torque is an attempt to turn the rotor; reverse torque of an attempt to reverse the rotor. Superposition of the two torque motors turning up is to promote the synthesis of torque.
Whether or their size and the relationship between slip and three-phase asynchronous motor is the same. If the motor speed is
Is being transferred to the magnetic field, the slip rate:
On the reverse magnetic field, the slip rate:
Single-phase asynchronous motor T-s curve, see left
By the single-phase asynchronous motor patterns that the main features are:
(1) n = 0, s = 1, T = T + + T-= 0, shows no single-phase induction motor starting torque, if not to take other measures, the motor can not start.
(2) When s ≠ 1 时, T ≠ 0, T has no fixed direction, it depends on s, the positive and negative.
(3) The existence of reverse torque, so that torque is also decreased synthesis, so single-phase asynchronous motor overload low.
Capacitance-phase start working principle
Startup switch K closed so that the two winding current I1, I2 phase of about 90 °, resulting in rotating magnetic field, electrical switch up; rotation is
After the centrifugal switch is bypassing the often start the winding is cut off.
Shaded pole single phase motor works
Access after the stator current, part of the magnetic flux through the circuit loop, and in which the induced current. Short-circuit loop in the current impede flux changes, causing a short circuit ring section and not short-circuit ring part of the magnetic flux generated with the phase difference to form the rotating magnetic field, so that the rotor turn up.
Diagram above the direction of motor rotation: instantaneous clockwise. Because there is no short-circuit ring part of the flux than the flux short circuit some of the leading ring.
July 21st, 2010 in
Uncategorized | tags:
motors |
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1: servo motor
servo motor is widely used in all kinds of control system, the input voltage signal can be converted to motor shaft, dragging output by mechanical control components, so as to achieve control purposes. Dc and ac servo motor is, the earliest servo motor is general motor control precision, in the circumstances, the dc motor servo motor do. Currently the dc servo motor from the structure, small power of dc motors, its excitation control and use the armature magnetic control, but usually adopts the armature control.
2: stepper motor
stepper motor is mainly used in the manufacturing sector, CNC because stepper motor doesn’t need A/D conversion, can directly into digital pulse signal, so has been considered condition is the most ideal of CNC machine components. In addition to the application of nc machine, stepping motor can also be used in other mechanical automatic feeder, for example, as the motor, as general motors floppy drive, and can also be used in the printer and plotters.
3: torque motor
torque motor has low speed and large torque characteristics. Commonly used in textile industry often ac torque motor, the working principle and structure of the same phase asynchronous motors and.
4: switched reluctance motor
SRM is a new kind of motor, the structure is very simple and solid, low cost, high performance is excellent, traditional control motor strong competitors, with a strong market potential.
5: brushless dc motor
brushless dc motor of mechanical properties and adjust the characteristics of good linearity, wide range of speed, long life, easy maintenance, low noise caused by brush a series of problems, so this kind of motor control system in a lot of application.
6: dc motor
Dc motor speed has good performance, easy to start, etc, so the truck starting current dc motivation is still widely used in dc power supply, especially after the emergence of silicon.
7: asynchronous motors
asynchronous motor has simple structure, manufacture, use and maintenance convenience, quality and reliable operation of smaller, lower-cost advantages. Asynchronous motor, main is widely applied in driving machine, pumps, blowers, compressor, crane hoisting equipment, mining machinery, light industrial machinery, agricultural product processing machinery production machinery and workers, most household appliances and medical equipment, etc. In the application of household appliances, such as more fans, refrigerators, air conditioners and cleaner, etc.
8: mainly used in synchronous motor
synchronous motor, such as mechanical, pumps, blowers, ball mill, compressor, and small, micro instruments or act as control components. Which is the main three-phase synchronous motor.
In addition, still can use when the camera, network transmission inductive or capacitive reactive power.
July 20th, 2010 in
Uncategorized | tags:
Motor |
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